Multilayer protocol analysis method and device as well as data matching method and device

• Main Authors: ZOU RONGZHU, HOU ZHIHAN
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to a multilayer protocol analysis method and device as well as a data matching method and device. The multilayer protocol analysis method applied to a first syntactic analyzer comprises the steps of receiving to-be-matched first protocol data; pushing a terminal symbol of a lower-layer protocol into a stack top of a symbol stack and inputting the to-be-matched first protocol data into a lexical analyzer corresponding to the current stack top state of the state stack; receiving a matching result returned by the lexical analyzer; carrying out syntactic analysis on a first terminal symbol with a predicate; when the syntactic analysis on the first terminal symbol with the predicate is finished, judging whether a next importable event in the current stack top state of the state stack is the target non-terminal symbol of the upper-layer protocol; and when determining that the next importable event is the target non-terminal symbol of the upper-layer protocol, sending the to-be-matched second p